Good Post Ron. Now, if you could figure that out why can't those high priced engineers figure that out? Maybe they should hire you on as a consultant.
Art

okay Grouse i modded my Optima's Plug with the best 5/32 flash channel. My first shot was a hang fire, i loaded it how i normally do. After that shot i increased my seating pressure and boom, booom. No problems after that. I am reloading some tubes now for more shooting but after seeing the primers, well i will have the post pictures later.

Okay, the bullet does need to be on the powder. If you are hinting that a loose sabot wont fire with BH209, your wrong again with the right breech plug.

ronlaughlin

Have you played around with a TC Speed Breech Plug?

This plug when modified is an excellent BH plug and does not have the power pocket you speak of.

I do not think the powder poclet is the magic key - it is the modification of the flas channel as well as the flash hole.

I have modified several Knight plugs, an Omega plug with the vent liner on the nose. They work very well with any primer you shoose to use + plus they reduce blow back presures on the nose of the primer by offering a larger volume flash channel.

Here is a drawing i made that shows the modifications.



Lee has modified a Speed breech in a simular manner with excellent results. Lehigh has bult me several of this type of BP and we use them all the time with great results even shooting an old Remington 209-4 primer (a primer designed for 410 shot guns.)

I believe Busta has also made these same modifications with great results.

Here is a picture of a couple of modified CVA plugs - they work equally well ignitien BH with any primer, although they are not as clean as yours because I had no way of head spacing...



Just some additional thoughts from the peanut gallery...

I dont shoot sabots so's i wouldnt know. The first shot with thumb pressure seating, just went pop and i saw the bullet skip across the ground. Thats expensive lead i lost!

I have the confidence you will figure it out.

first shot again on the 5/32 flash channel plug... DOINK! Got the bullet back at least. Entire primer was coated in black soot along with the breech plug and face of the frame.

Them darn CVA'S. LMAO

BTW- Your vent-liner might be wore out.

I hope your not scaring those Deer away.

Buy a Triumph and you won't have to modify the plug